1 2 Inch Osb For Roof

Osb roof decking thickness 7 16 1 2 or 5 8 if were using osb we get 9 16 we dont worry about getting both 7 16 and 9 16 for walls then the roof we just get all of the same.

1 2 inch osb for roof.

Oriented strand board questions page 2 y 2020 m 10 d 4 h 15cst bvseo bulk prod bvqa vn bulk 3 0 12 cp 1 bvpage1 co hasquestionsanswers tq 78 loc sid 100072564 prod sort sortentry order num. Isherwood jul 26 16 at 15 19. If you get 45 or more pounds of pull out resistance that s considered acceptable for most applications. 1 2 cat ps2 10 osb sheathing application as 4 x 8 item 12213 model 660663 compare find my store for pricing and availability 5 zip system 1 2 cat ps2 10 tongue and groove osb sheathing application as 4 x 8 item.

One option is to try some test fasteners in the osb. Here in snow country 1 2 osb is standard with 7 16 being common for walls. 1 2 vs 5 8 roof sheathing that amazing i dont know of one builder here in minnesota that uses 5 8 for roof decking most use 7 16 osb and have seen a few who use 3 8 cdx. Only once in many years of construction did i see someone pay for 5 8 osb on a roof presumably to prevent any slight sagging years down the road.

My solution when i built our garage was trusses on 19 3 center the canadian std and 5 8 osb. 30 years on it s working out fine. 3 8 is insane walking truss to truss. Around here southern mn the cities you can drive through the neighborhoods with cheaper houses the ones with trusses on 24 centers and 1 2 or 7 16 sheeting and most many will have sagged roofs.

Sheets must have a 1 8 inch expansion gap between them and should be secured to the rafters. 7 16 is adequate but you dont want to have to many people or shingles in one spot. Roof leaks of course but also improper attic ventilation can cause condensation in the roof deck that can cause the osb to weaken. 3 4 is unheard of and i d consider it absurdly wasteful.

Half inch osb is suitable for rafter spacings up to 24 inches whether or not the edges are supported.